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Backwards migration with Django South
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Your app should have a migrations directory, with files in it named like
0000_initial.py
0001_added_some_fields.py
0002_added_some_more_fields.py
0003_deleted_some_stuff.py
Normally, when you run ./manage.py migrate your_app, South runs all new migrations, in order. (It looks at the database tab...
SQL Server - When to use Clustered vs non-Clustered Index?
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it should be non-nullable and ideally also fixed width - a varchar(250) makes a very poor clustering key
Anything else should really be second and third level of importance behind these points ....
See some of Kimberly Tripp's (The Queen of Indexing) blog posts on the topic - anything she h...
Python integer division yields float
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answered Aug 15 '09 at 21:51
Brandon E TaylorBrandon E Taylor
23.1k66 gold badges4343 silver badges6868 bronze badges
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get CSS rule's percentage value in jQuery
... built-in way, I'm afraid. You can do something like this:
var width = ( 100 * parseFloat($('.largeField').css('width')) / parseFloat($('.largeField').parent().css('width')) ) + '%';
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impro...
The tilde operator in C
...he ~ operator is bitwise NOT, it inverts the bits in a binary number:
NOT 011100
= 100011
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Remove multiple keys from Map in efficient way?
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– Ruchira Gayan Ranaweera
Jul 16 '13 at 12:03
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Add hover text without javascript like we hover on a user's reputation
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508
Use the title attribute, for example:
<div title="them's hoverin' words">hover me&...
Rails ActionMailer - format sender and recipient name/email address
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edited Nov 16 '16 at 0:03
Jonathan Allard
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a...
Does it make sense to do “try-finally” without “catch”?
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answered Apr 10 '10 at 18:39
Taylor LeeseTaylor Leese
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How to open files relative to home directory
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The shell (bash, zsh, etc) is responsible for wildcard expansion, so in your first example the...